• Title/Summary/Keyword: 여과필터

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Development and Characterization of High Temperature Filter (내열성여과포의 개발 및 기초성능 규명)

  • 박영옥;구철오;임정환;김홍룡;손재익;이영우
    • Journal of Energy Engineering
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    • v.7 no.1
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    • pp.103-112
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    • 1998

  • A high temperature fabric filter was developed and characterized in order to solve the various problems encountered in the operation of industrial fabric filters. Four kinds of dusts generated in the typical domestic industry were used for its characterization, coke dust from a steel manufacturing process, cement dust from a cement manufacturing process, fly ash from a fluidized-bed combustor, and incinerator ash from a waste plastics incinerator. The physical and chemical properties of the high temperature fabric filter were analyzed in terms of mean flow pore pressure, bubble point pore diameter, mean flow pore diameter, pore size distribution, and the changes in tensile strength and initial elastic modulus under $SO_2$ and $NO_2$ atmospheres. Pressure drop, dust penetration, and figure of merit for the fabric filter were also investigated in a bench-scale filter testing unit. The fabric filter developed in this study had good physical and chemical filter properties and showed a very applicability to typical industrial dusts treatments.

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Development of Membrane Filter with Nanostructured Porous Layer by Coating Metal Nanoparticles onto a Micor-Filter (마이크로-필터 상에 금속 나노입자 코팅에 의한 나노구조 기공층 멤브레인 필터 개발)

  • Lee, Dong Geun;Park, Seok Joo;Park, Young Ok;Ryu, Jeong In
    • Korean Chemical Engineering Research
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    • v.45 no.6
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    • pp.591-595
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    • 2007

  • The membrane filter coated with nanostructured porous surface layer was made by heat treatment after depositing nanoparticles onto a conventional micron-fibrous metal filter as a substrate filter. The nanostructured porous layer membrane filter (NSPL-MF), whose the filtration performance was improved compared with the conventional metal membrane filters, was developed by coating the nanoparticle agglomerates of dendrite structure onto the micron-fibrous metal filter. Pressure drop of nanostructured porous layer membrane filter decreased with increasing the heat treatment temperature to make the nanostructured porous layer adhered on the filter surface because the nanoparticle agglomerates shrank, but filtration efficiency did not decrease clearly.

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Study on the Limit of Water Content by Cake Filtration and Effective Operation in Filtration-Expression Process (여과에 의한 케이크 함수량의 한계와 효율적인 여과-압착 조작 조건에 대한 연구)

  • Yim, Sung Sam;Song, Yun Min
    • Korean Chemical Engineering Research
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    • v.43 no.6
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    • pp.696-703
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    • 2005

  • The definition of cake is not established for cake filtration, and especially the definition was impossible for the filtration of the floc already sedimented. The definition is proposed with the experimental method named 'filtration-permeation'. The limit of water content which can be achieved with cake filtration of floc was established with the definition of cake. The expression operation of which the purpose is to reduce the water content of pre-formed filter cake is calculated with our 'unified theory on solid-liquid separation' and compared with the experimental results. The importance of expression is analyzed by the calculated whole procedure of cake filtration and expression. The method determining the most effective operational conditions of filter press including the cake discharge and washing time is proposed.

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